<!DOCTYPE html>
<html lang="en"  xmlns="http://www.w3.org/1999/xhtml"  xmlns:th="http://www.thymeleaf.org">

<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<!--th:text 属性，替换标签的文本内容-->
<h1 th:text="${dc}">大锤</h1>

</body>
</html>